Merge branch 'uwsgi-exec' into 'master'

Start uwsgi with `exec` so it receives signals correctly

See merge request !1277

resources/entrypoint.sh

@@ -10,4 +10,4 @@ done
 
 cd /usr/src/app/website/
 >&2 echo "Running ./manage.py $@"
-./manage.py $@
+exec ./manage.py $@

resources/entrypoint_production.sh

@@ -17,7 +17,7 @@ cd /usr/src/app/website/
 ./manage.py compress --force
 
 >&2 echo "Running site with uwsgi"
-uwsgi --chdir /usr/src/app/website \
+exec uwsgi --chdir /usr/src/app/website \
     --socket :8000 \
     --socket-timeout 1800 \
     --uid 33 \